| Claim and Claim Adjustment Expense Reserves and Future Policy Benefit Reserves | Claim and Claim Adjustment Expense Reserves and Future Policy Benefit Reserves Property and casualty insurance claim and claim adjustment expense reserves represent the estimated amounts necessary to resolve all outstanding claims, including incurred but not reported (“IBNR”) claims as of the reporting date. Reserve projections are based primarily on detailed analysis of the facts in each case, experience with similar cases and various historical development patterns. Consideration is given to historical patterns such as claim reserving trends and settlement practices, loss payments, pending levels of unpaid claims and product mix, as well as court decisions and economic conditions including inflation, social inflation and public attitudes. All of these factors can affect the estimation of claim and claim adjustment expense reserves. Establishing claim and claim adjustment expense reserves, including claim and claim adjustment expense reserves for catastrophic events that have occurred, is an estimation process. Many factors can ultimately affect the final settlement of a claim and, therefore, the necessary reserve. Changes in the law, results of litigation, medical costs, the cost of repair materials and labor rates can affect ultimate claim costs. In addition, time can be a critical part of reserving determinations since the longer the span between the incidence of a loss and the payment or settlement of the claim, the more variable the ultimate settlement amount can be. Accordingly, short-tail claims, such as property damage claims, tend to be more reasonably estimable than long-tail claims, such as long term care, workers’ compensation, general liability and professional liability claims. Adjustments to prior year reserve estimates, if necessary, are reflected in the results of operations in the period that the need for such adjustments is determined. There can be no assurance that the ultimate cost for insurance losses will not exceed current estimates. CNA’s commercial property and casualty insurance operations (“Property & Casualty Operations”) include its Specialty, Commercial and International lines of business. CNA’s Other Insurance Operations outside of Property & Casualty Operations include its long term care business that is in run-off, certain corporate expenses, including interest on CNA’s corporate debt, and certain property and casualty businesses in run-off, including CNA Re, A&EP, a legacy portfolio of excess workers’ compensation policies and certain legacy mass tort reserves. Liability for Unpaid Claim and Claim Adjustment Expenses The table below reconciles the net liability for unpaid claim and claim adjustment expenses to the amount presented on the Consolidated Balance Sheets. December 31 2022 (In millions) Net liability for unpaid claim and claim adjustment expenses: Property & Casualty Operations $ 15,996 Other Insurance Operations (a) 3,912 Total net claim and claim adjustment expenses 19,908 Reinsurance receivables: (b) Property & Casualty Operations 2,680 Other Insurance Operations (c) 2,511 Total reinsurance receivables 5,191 Total gross liability for unpaid claims and claims adjustment expenses $ 25,099 (a) Other Insurance Operations amounts are primarily related to long term care claim reserves for policyholders on claim, which are long duration insurance contracts, but also include amounts related to unfunded structured settlements arising from short duration insurance contracts. (b) Reinsurance receivables presented are gross of the allowance for uncollectible reinsurance and do not include reinsurance receivables related to paid losses. (c) The Other Insurance Operations reinsurance receivables are primarily related to A&EP claims covered under the loss portfolio transfer (“LPT”). The following table presents a reconciliation between beginning and ending claim and claim adjustment expense reserves, including claim and claim adjustment expense reserves of Other Insurance Operations. Year Ended December 31 2022 2021 2020 (In millions) Reserves, beginning of year: Gross $ 24,174 $ 22,706 $ 21,720 Ceded 4,969 4,005 3,835 Net reserves, beginning of year 19,205 18,701 17,885 Reduction of net reserves due to the excess workers’ compensation loss portfolio transfer (632) Net incurred claim and claim adjustment expenses: Provision for insured events of current year 6,243 5,970 5,793 Decrease in provision for insured events of prior years (187) (104) (119) Amortization of discount 170 174 183 Total net incurred (a) 6,226 6,040 5,857 Net payments attributable to: Current year events (913) (1,014) (948) Prior year events (4,348) (3,830) (4,216) Total net payments (5,261) (4,844) (5,164) Foreign currency translation adjustment and other (262) (60) 123 Net reserves, end of year 19,908 19,205 18,701 Ceded reserves, end of year 5,191 4,969 4,005 Gross reserves, end of year $ 25,099 $ 24,174 $ 22,706 (a) Total net incurred above does not agree to Insurance claims and policyholders’ benefits as reflected on the Consolidated Statements of Operations due to amounts related to retroactive reinsurance deferred gain accounting, the loss on the excess workers’ compensation loss portfolio transfer, uncollectible reinsurance and benefit expenses related to future policy benefits, which are not reflected in the table above. Reserving Methodology In developing claim and claim adjustment expense (“loss” or “losses”) reserve estimates, CNA’s actuaries perform detailed reserve analyses that are staggered throughout the year. The data is organized at a reserve group level. Every reserve group is reviewed at least once during the year, but most are reviewed more frequently. The analyses generally review losses gross of ceded reinsurance and apply the ceded reinsurance terms to the gross estimates to establish estimates net of reinsurance. Factors considered include, but are not limited to, the historical pattern and volatility of the actuarial indications, the sensitivity of the actuarial indications to changes in paid and incurred loss patterns, the consistency of claims handling processes, the consistency of case reserving practices, changes in CNA’s pricing and underwriting, pricing and underwriting trends in the insurance market and legal, judicial, social and economic trends. In addition to the detailed analyses, CNA reviews actual loss emergence for all products each quarter. In developing the loss reserve estimates for property and casualty contracts, CNA generally projects ultimate losses using several common actuarial methods as listed below. CNA reviews the various indications from the various methods and applies judgment to select an actuarial point estimate. The carried reserve may differ from the actuarial point estimate as a result of CNA’s consideration of the factors noted above as well as the potential volatility of the projections associated with the specific product being analyzed and other factors affecting claims costs that may not be quantifiable through traditional actuarial analysis. The indicated required reserve is the difference between the selected ultimate loss and the inception-to-date paid losses. The difference between the selected ultimate loss and the case incurred or reported loss is IBNR. IBNR includes a provision for development on known cases as well as a provision for late reported incurred claims. The most frequently utilized methods to project ultimate losses include the following: • Paid development : The paid development method estimates ultimate losses by reviewing paid loss patterns and applying them to accident years with further expected changes in paid losses. • Incurred development : The incurred development method is similar to the paid development method, but it uses case incurred losses instead of paid losses. • Loss ratio : The loss ratio method multiplies premiums by an expected loss ratio to produce ultimate loss estimates for each accident year. • Bornhuetter-Ferguson paid loss : The Bornhuetter-Ferguson paid loss method is a combination of the paid development approach and the loss ratio approach. This method normally determines expected loss ratios similar to the approach used to estimate the expected loss ratio for the loss ratio method. • Bornhuetter-Ferguson incurred loss : The Bornhuetter-Ferguson incurred loss method is similar to the Bornhuetter-Ferguson using premiums and paid loss method except that it uses case incurred losses. • Frequency times severity : The frequency times severity method multiplies a projected number of ultimate claims by an estimated ultimate average loss for each accident year to produce ultimate loss estimates. • Stochastic modeling : The stochastic modeling produces a range of possible outcomes based on varying assumptions related to the particular product being modeled. For many exposures, especially those that can be considered long-tail, a particular accident or policy year may not have a sufficient volume of paid losses to produce a statistically reliable estimate of ultimate losses. In such a case, CNA’s actuaries typically assign more weight to the incurred development method than to the paid development method. As claims continue to settle and the volume of paid loss increases, the actuaries may assign additional weight to the paid development method. For most of CNA’s products, even the incurred losses for accident or policy years that are early in the claim settlement process will not be of sufficient volume to produce a reliable estimate of ultimate losses. In these cases, CNA may not assign much, if any weight to the paid and incurred development methods. CNA may use the loss ratio, Bornhuetter-Ferguson and/or frequency times severity methods. For short-tail exposures, the paid and incurred development methods can often be relied on sooner, primarily because CNA’s history includes a sufficient number of years to cover the entire period over which paid and incurred losses are expected to change. However, CNA may also use the loss ratio, Bornhuetter-Ferguson and/or frequency times severity methods for short-tail exposures. For other more complex reserve groups where the above methods may not produce reliable indications, CNA uses additional methods tailored to the characteristics of the specific situation . CNA’s reserving methodologies for mass tort and A&EP are similar as both are based on detailed reviews of large accounts with estimates of ultimate payments based on the facts in each case and CNA’s view of applicable law and coverage litigation. Gross and Net Carried Reserves The following tables present the gross and net carried reserves: December 31, 2022 Property and Casualty Operations Other Insurance Operations Total (In millions) Gross Case Reserves $ 5,502 $ 4,885 $ 10,387 Gross IBNR Reserves 13,174 1,538 14,712 Total Gross Carried Claim and Claim Adjustment Expense Reserves $ 18,676 $ 6,423 $ 25,099 Net Case Reserves $ 4,805 $ 3,514 $ 8,319 Net IBNR Reserves 11,191 398 11,589 Total Net Carried Claim and Claim Adjustment Expense Reserves $ 15,996 $ 3,912 $ 19,908 December 31, 2021 Gross Case Reserves $ 5,621 $ 4,934 $ 10,555 Gross IBNR Reserves 11,982 1,637 13,619 Total Gross Carried Claim and Claim Adjustment Expense Reserves $ 17,603 $ 6,571 $ 24,174 Net Case Reserves $ 4,932 $ 3,437 $ 8,369 Net IBNR Reserves 10,338 498 10,836 Total Net Carried Claim and Claim Adjustment Expense Reserves $ 15,270 $ 3,935 $ 19,205 Net Prior Year Development Changes in estimates of claim and claim adjustment expense reserves, net of reinsurance, for prior years are defined as net prior year loss reserve development. These changes can be favorable or unfavorable. The following table and discussion present details of the net prior year loss reserve development in Property & Casualty Operations and Other Insurance Operations: Year Ended December 31 2022 2021 2020 (In millions) Medical professional liability $ 18 $ 23 $ 35 Other professional liability and management liability 50 24 (15) Surety (83) (73) (69) Commercial auto 49 53 33 General liability 67 15 15 Workers’ compensation (152) (82) (96) Property and other (45) (9) 27 Other insurance operations 64 60 50 Total pretax (favorable) unfavorable development $ (32) $ 11 $ (20) Development Tables For CNA’s Property & Casualty Operations, the following tables present further detail and commentary on the development reflected in the financial statements for each of the periods presented. Also presented are loss reserve development tables that illustrate the change over time of reserves established for claim and allocated claim adjustment expenses arising from short-duration insurance contracts for certain lines of business within CNA’s Property & Casualty Operations. Not all lines of business are presented based on their context to CNA’s overall loss reserves, calendar year reserve development, or calendar year net earned premiums. Insurance contracts are considered to be short-duration contracts when the contracts are not expected to remain in force for an extended period of time. The Cumulative Net Incurred Claim and Allocated Claim Adjustment Expenses tables, reading across, show the cumulative net incurred claim and allocated claim adjustment expenses relating to each accident year at the end of the stated calendar year. Changes in the cumulative amount across time are the result of CNA’s expanded awareness of additional facts and circumstances that pertain to the unsettled claims. The Cumulative Net Paid Claim and Allocated Claim Adjustment Expenses tables, reading across, show the cumulative amount paid for claims in each accident year as of the end of the stated calendar year. The Net Strengthening or (Releases) of Prior Accident Year Reserves tables, reading across, show the net increase or decrease in the cumulative net incurred accident year claim and allocated claim adjustment expenses during each stated calendar year and indicates whether the reserves for that accident year were strengthened or released. The information in the tables is reported on a net basis after reinsurance and does not include the effects of discounting. The information contained in calendar years 2021 and prior is unaudited. To the extent CNA enters into a commutation, the transaction is reported on a prospective basis. To the extent that CNA enters into a disposition, the effects of the disposition are reported on a retrospective basis by removing the balances associated with it. The amounts reported for the cumulative number of reported claims include direct and assumed open and closed claims by accident year at the claimant level. The number excludes claim counts for claims within a policy deductible where the insured is responsible for payment of losses in the deductible layer. Claim count data for certain assumed reinsurance contracts is unavailable. In the loss reserve development tables, IBNR includes reserves for incurred but not reported losses and expected development on case reserves. CNA does not establish case reserves for allocated loss adjusted expenses (“ALAE”), therefore ALAE reserves are also included in the estimate of IBNR. 2022 Unfavorable development in medical professional liability was due to higher than expected large loss activity in multiple accident years. Unfavorable development in other professional liability and management liability was due to higher than expected claim severity and frequency in CNA’s cyber and professional errors and omissions (“E&O”) businesses in multiple accident years. Favorable development in surety was primarily due to lower than expected frequency and lack of systemic activity in recent accident years. Unfavorable development in commercial auto and general liability was due to higher than expected claim severity across multiple accident years. Favorable development in workers’ compensation was due to favorable medical trends driving lower than expected severity in multiple accident years. Favorable development in property and other was primarily due to lower than expected loss emergence in recent accident years. Unfavorable development in other insurance operations was largely associated with legacy mass tort abuse claims, including the Diocese of Rochester proposed settlement. 2021 Unfavorable development in medical professional liability was due to higher than expected large loss activity in recent accident years. Unfavorable development in other professional liability and management liability was due to higher than expected frequency of large losses in multiple accident years and higher than expected claim severity and frequency in CNA’s cyber business in recent accident years. Favorable development in surety was primarily due to lower than expected frequency and lack of systemic activity in recent accident years. Unfavorable development in commercial auto was due to higher than expected claim severity in CNA’s middle market and construction businesses in multiple accident years. Unfavorable development in general liability was due to higher than expected claim severity in CNA’s construction and umbrella businesses in multiple accident years. Favorable development in workers’ compensation was due to favorable medical trends driving lower than expected severity in multiple accident years. Unfavorable development in other insurance operations was due to legacy mass tort exposures, primarily related to abuse. 2020 Unfavorable development in medical professional liability was primarily due to higher than expected frequency of large losses in recent accident years and unfavorable outcomes on specific claims in older accident years. Favorable development in other professional liability and management liability was primarily due to lower than expected loss emergence in accident year 2017 and accident years prior to 2010. Favorable development in surety was due to lower than expected frequency and lack of systemic loss activity for accident years 2019 and prior. Unfavorable development in commercial auto was due to higher than expected claim severity in CNA’s middle market and construction businesses in recent accident years. Unfavorable development in general liability was driven by increased bodily injury severities in accident years 2012 through 2016 and higher than expected frequency and severity in CNA’s umbrella business in accident years 2015 through 2019. Favorable development in workers’ compensation was due to favorable medical trends driving lower than expected severity in multiple accident years. Unfavorable development in property and other was primarily due to higher than expected large loss activity in accident year 2019 in CNA’s middle market, national accounts and marine business units. Unfavorable development in other insurance operations was due to legacy mass tort exposures, primarily related to abuse. Property & Casualty Operations – Line of Business Composition The table below presents the net liability for unpaid claim and claim adjustment expenses, by line of business for Property & Casualty Operations: December 31 2022 (In millions) Medical professional liability $ 1,526 Other professional liability and management liability 3,514 Surety 396 Commercial auto 787 General liability 3,206 Workers’ compensation 3,739 Property and other 2,828 Total net liability for unpaid claim and claim adjustment expenses $ 15,996 Medical Professional Liability Cumulative Net Incurred Claim and Allocated Claim Adjustment Expenses December 31, 2022 December 31 2013 (a) 2014 (a) 2015 (a) 2016 (a) 2017 (a) 2018 (a) 2019 (a) 2020 (a) 2021 (a) 2022 IBNR Cumulative Number of Claims (In millions, except reported claims data) Accident Year 2013 $ 462 $ 479 $ 500 $ 513 $ 525 $ 535 $ 545 $ 531 $ 530 $ 530 $ 5 19,587 2014 450 489 537 530 535 529 527 524 527 12 19,818 2015 433 499 510 494 488 510 501 498 22 18,203 2016 427 487 485 499 508 510 508 12 16,136 2017 412 449 458 460 455 460 30 15,288 2018 404 429 431 448 470 31 15,163 2019 430 445 458 471 101 14,189 2020 477 476 455 226 10,679 2021 377 376 259 8,801 2022 329 290 6,717 Total $ 4,624 $ 988 Cumulative Net Paid Claim and Allocated Claim Adjustment Expenses Accident Year 2013 $ 17 $ 119 $ 255 $ 355 $ 414 $ 462 $ 495 $ 508 $ 512 $ 517 2014 23 136 258 359 417 472 489 497 504 2015 22 101 230 313 384 420 444 458 2016 18 121 246 339 401 436 460 2017 19 107 235 308 355 388 2018 21 115 211 290 349 2019 17 91 183 280 2020 11 61 139 2021 11 49 2022 10 Total $ 3,154 Net liability for unpaid claim and allocated claim adjustment expenses for the accident years presented $ 1,470 Net liability for unpaid claim and claim adjustment expenses for accident years prior to 2013 25 Liability for unallocated claim adjustment expenses for accident years presented 31 Total net liability for unpaid claim and claim adjustment expenses $ 1,526 Net Strengthening (Releases) of Prior Accident Year Reserves Years Ended December 31 Total Accident Year 2013 $ 17 $ 21 $ 13 $ 12 $ 10 $ 10 $ (14) $ (1) $ — $ 68 2014 39 48 (7) 5 (6) (2) (3) 3 77 2015 66 11 (16) (6) 22 (9) (3) 65 2016 60 (2) 14 9 2 (2) 81 2017 37 9 2 (5) 5 48 2018 25 2 17 22 66 2019 15 13 13 41 2020 (1) (21) (22) 2021 (1) (1) Total net development for the accident years presented above 34 13 16 Total net development for accident years prior to 2013 1 3 (3) Total unallocated claim adjustment expense development — 7 5 Total $ 35 $ 23 $ 18 (a) Data presented for these calendar years is required supplemental information, which is unaudited. Other Professional Liability and Management Liability Cumulative Net Incurred Claim and Allocated Claim Adjustment Expenses December 31, 2022 December 31 2013 (a) 2014 (a) 2015 (a) 2016 (a) 2017 (a) 2018 (a) 2019 (a) 2020 (a) 2021 (a) 2022 IBNR Cumulative Number of Claims (In millions, except reported claims data) Accident Year 2013 $ 884 $ 894 $ 926 $ 885 $ 866 $ 863 $ 850 $ 846 $ 833 $ 829 $ 21 17,953 2014 878 898 885 831 835 854 845 841 842 29 17,583 2015 888 892 877 832 807 813 836 855 30 17,452 2016 901 900 900 904 907 891 888 57 17,976 2017 847 845 813 791 775 758 107 18,181 2018 850 864 869 906 923 142 19,995 2019 837 845 856 876 173 19,447 2020 930 944 951 408 19,333 2021 1,037 1,038 706 17,983 2022 1,120 1,000 15,327 Total $ 9,080 $ 2,673 Cumulative Net Paid Claim and Allocated Claim Adjustment Expenses Accident Year 2013 $ 54 $ 249 $ 447 $ 618 $ 702 $ 754 $ 771 $ 779 $ 787 $ 791 2014 51 223 392 515 647 707 743 787 802 2015 60 234 404 542 612 677 725 794 2016 64 248 466 625 701 736 784 2017 57 222 394 498 557 596 2018 54 282 473 599 706 2019 64 263 422 567 2020 67 248 400 2021 58 217 2022 64 Total $ 5,721 Net liability for unpaid claim and allocated claim adjustment expenses for the accident years presented $ 3,359 Net liability for unpaid claim and claim adjustment expenses for accident years prior to 2013 99 Liability for unallocated claim adjustment expenses for accident years presented 56 Total net liability for unpaid claim and claim adjustment expenses $ 3,514 Net Strengthening (Releases) of Prior Accident Year Reserves Years Ended December 31 Total Accident Year 2013 $ 10 $ 32 $ (41) $ (19) $ (3) $ (13) $ (4) $ (13) $ (4) $ (55) 2014 20 (13) (54) 4 19 (9) (4) 1 (36) 2015 4 (15) (45) (25) 6 23 19 (33) 2016 (1) — 4 3 (16) (3) (13) 2017 (2) (32) (22) (16) (17) (89) 2018 14 5 37 17 73 2019 8 11 20 39 2020 14 7 21 2021 1 1 Total net development for the accident years presented above (13) 36 41 Total net development for accident years prior to 2013 (2) (14) 9 Total unallocated claim adjustment expense development — 2 — Total $ (15) $ 24 $ 50 (a) Data presented for these calendar years is required supplemental information, which is unaudited. Surety Cumulative Net Incurred Claim and Allocated Claim Adjustment Expenses December 31, 2022 December 31 2013 (a) 2014 (a) 2015 (a) 2016 (a) 2017 (a) 2018 (a) 2019 (a) 2020 (a) 2021 (a) 2022 IBNR Cumulative Number of Claims (In millions, except reported claims data) Accident Year 2013 $ 120 $ 121 $ 115 $ 106 $ 91 $ 87 $ 83 $ 82 $ 82 $ 82 $ 2 5,092 2014 123 124 94 69 60 45 45 43 42 3 5,127 2015 131 131 104 79 63 58 53 45 1 5,074 2016 124 124 109 84 67 64 58 5 5,544 2017 120 115 103 84 71 66 4 5,855 2018 114 108 91 62 56 16 6,196 2019 119 112 98 87 21 6,033 2020 128 119 81 51 4,452 2021 137 129 105 4,168 2022 155 143 2,772 Total $ 801 $ 351 Cumulative Net Paid Claim and Allocated Claim Adjustment Expenses Accident Year 2013 $ 16 $ 40 $ 69 $ 78 $ 78 $ 78 $ 77 $ 78 $ 79 $ 79 2014 7 30 38 36 38 38 39 39 38 2015 7 26 38 40 42 44 42 42 2016 5 37 45 45 43 43 41 2017 23 37 41 46 49 62 2018 5 25 34 39 40 2019 12 34 44 59 2020 4 20 28 2021 5 20 2022 12 Total $ 421 Net liability for unpaid claim and allocated claim adjustment expenses for the accident years presented $ 380 Net liability for unpaid claim and claim adjustment expenses for accident years prior to 2013 (4) Liability for unallocated claim adjustment expenses for accident years presented 20 Total net liability for unpaid claim and claim adjustment expenses $ 396 Net Strengthening (Releases) of Prior Accident Year Reserves Years Ended December 31 Total Accident Year 2013 $ 1 $ (6) $ (9) $ (15) $ (4) $ (4) $ (1) $ — $ — $ (38) 2014 1 (30) (25) (9) (15) — (2) (1) (81) 2015 — (27) (25) (16) (5) (5) (8) (86) 2016 — (15) (25) (17) (3) (6) (66) 2017 (5) (12) (19) (13) (5) (54) 2018 (6) (17) (29) (6) (58) 2019 (7) (14) (11) (32) 2020 (9) (38) (47) 2021 (8) (8) Total net development for the accident years presented above (66) (75) (83) Total net development for accident years prior to 2013 (3) 2 — Total unallocated claim adjustment expense development — — — Total $ (69) $ (73) $ (83) (a) Data presented for these calendar years is required supplemental information, which is unaudited. Commercial Auto Cumulative Net Incurred Claim and Allocated Claim Adjustment Expenses December 31, 2022 December 31 2013 (a) 2014 (a) 2015 (a) 2016 (a) 2017 (a) 2018 (a) 2019 (a) 2020 (a) 2021 (a) 2022 IBNR Cumulative (In millions, except reported claims data) Accident Year 2013 $ 246 $ 265 $ 265 $ 249 $ 245 $ 245 $ 241 $ 241 $ 241 $ 243 $ 3 39,431 2014 234 223 212 205 205 201 201 202 201 1 33,631 2015 201 199 190 190 183 181 183 182 3 30,430 2016 198 186 186 186 190 195 200 7 30,452 2017 199 198 200 221 232 239 3 30,947 2018 229 227 227 245 254 5 34,319 2019 257 266 289 323 27 37,237 2020 310 303 304 56 29,070 2021 397 388 153 32,575 2022 437 263 30,229 Total $ 2,771 $ 521 Cumulative Net Paid Claim and Allocated Claim Adjustment Expenses Accident Year 2013 $ 74 $ 135 $ 168 $ 200 $ 225 $ 234 $ 238 $ 239 $ 239 $ 239 2014 64 102 137 166 187 196 198 199 199 2015 52 96 130 153 172 175 178 179 2016 52 93 126 154 175 185 190 2017 58 107 150 178 203 225 2018 66 128 175 212 238 2019 77 147 203 257 2020 71 134 197 2021 83 168 2022 112 Total $ 2,004 Net liability for unpaid claim and allocated claim adjustment expenses for the accident years presented $ 767 Net liability for unpaid claim and claim adjustment expenses for accident years prior to 2013 4 Liability for unallocated claim adjustment expenses for accident years presented 16 Total net liability for unpaid claim and claim adjustment expenses $ 787 Net Strengthening (Releases) of Prior Accident Year Reserves Years Ended December 31 Total Accident Year 2013 $ 19 $ — $ (16) $ (4) $ — $ (4) $ — $ — $ 2 $ (3) 2014 (11) (11) (7) — (4) — 1 (1) (33) 2015 (2) (9) — (7) (2) 2 (1) (19) 2016 (12) — — 4 5 5 2 2017 (1) 2 21 11 7 40 2018 (2) — 18 9 25 2019 9 23 34 66 2020 (7) 1 (6) 2021 (9) (9) Total net development for the accident years presented above 32 53 47 Total net development for accident years prior to 2013 1 — 2 Total unallocated claim adjustment expense development — — — Total $ 33 $ 53 $ 49 (a) Data presented for these calendar years is required supplemental information, which is unaudited. General Liability Cumulative Net Incurred Claim and Allocated Claim Adjustment Expenses December 31, 2022 December 31 2013 (a) 2014 (a) 2015 (a) 2016 (a) 2017 (a) 2018 (a) 2019 (a) 2020 (a) 2021 (a) 2022 IBNR Cumulative Number of Claims (In millions, except reported claims data) Accident Year 2013 $ 650 $ 655 $ 650 $ 655 $ 613 $ 623 $ 620 $ 623 $ 624 $ 629 $ 32 33,738 2014 653 658 654 631 635 658 659 659 676 34 28,131 2015 581 576 574 589 600 602 617 625 33 24,200 2016 623 659 667 671 673 683 684 43 24,699 2017 632 632 632 634 630 652 32 22,359 2018 653 644 646 639 650 127 20,242 2019 680 682 682 691 227 19,265 2020 723 722 726 434 13,998 2021 782 784 527 13,775 2022 929 835 10,572 Total $ 7,046 $ 2,324 Cumulative Net Paid Claim and Allocated Claim Adjustment Expenses Accident Year 2013 $ 31 $ 128 $ 240 $ 352 $ 450 $ 510 $ 551 $ 572 $ 582 $ 586 2014 31 119 247 376 481 547 569 607 624 2015 19 110 230 357 446 501 530 561 2016 32 163 279 407 481 524 582 2017 23 118 250 399 471 553 2018 33 107 228 307 428 2019 25 98 181 322 2020 23 99 192 2021 26 140 2022 29 Total $ 4,017 Net liability for unpaid claim and allocated claim adjustment expenses for the accident years presented $ 3,029 Net liability for unpaid claim and claim adjustment expenses for accident years prior to 2013 118 Liability for unallocated claim adjustment expenses for accident years presented 59 Total net liability for unpaid claim and claim adjustment expenses $ 3,206 Net Strengthening (Releases) of Prior Accident Year Reserves Years Ended December 31 Total Accident Year 2013 $ 5 $ (5) $ 5 $ (42) $ 10 $ (3) $ 3 $ 1 $ 5 $ (21) 2014 5 (4) (23) 4 23 1 — 17 23 2015 (5) (2) 15 11 2 15 8 44 2016 36 8 4 2 10 1 61 2017 — — 2 (4) 22 20 2018 (9) 2 (7) 11 (3) 2019 2 — 9 11 2020 (1) 4 3 2021 2 2 Total net development for the accident years presented above 14 14 79 Total net development for accident years prior to 2013 1 (1) (12) Total unallocated claim adjustment expense development — 2 — Total $ 15 $ 15 $ 67 (a) Data presented for these calendar years is required supplemental information, which is unaudited. Workers’ Compensation Cumulative Net Incurred Claim and Allocated Claim Adjustment Expenses December 31, 2022 December 31 2013 (a) 2014 (a) 2015 (a) 2016 (a) 2017 (a) 2018 (a) 2019 (a) 2020 (a) 2021 (a) 2022 IBNR Cumulative Number of Claims (In millions, except reported claims data) Accident Year 2013 $ 537 $ 572 $ 592 $ 618 $ 593 $ 582 $ 561 $ 552 $ 548 $ 537 $ 82 38,979 2014 467 480 479 452 450 446 439 448 430 76 33,522 2015 422 431 406 408 394 382 372 353 80 31,899 2016 426 405 396 382 366 355 331 77 31,991 2017 440 432 421 400 402 399 81 33,130 2018 450 440 428 415 415 93 34,875 2019 452 449 437 436 105 34,324 2020 477 466 446 182 29,392 2021 468 454 202 29,886 2022 497 308 28,753 Total $ 4,298 $ 1,286 Cumulative Net Paid Claim and Allocated Claim Adjustment Expenses Accident Year 2013 $ 80 $ 213 $ 300 $ 370 $ 417 $ 419 $ 411 $ 414 $ 417 $ 423 2014 61 159 215 258 282 290 297 306 312 2015 51 131 180 212 231 243 251 256 2016 53 129 169 198 219 227 234 2017 63 151 207 243 265 279 2018 68 163 229 259 280 2019 71 169 223 262 2020 65 147 200 2021 67 164 2022 79 Total $ 2,489 Net liability for unpaid claim and allocated claim adjustment expenses for the accident years presented $ 1,809 Net liability for unpaid claim and claim adjustment expenses for accident years prior to 2013 1,874 Other (b) (20) Liability for unallocated claim adjustment expenses for accident years presented 76 Total net liability for unpaid claim and claim adjustment expenses $ 3,739 Net Strengthening (Releases) of Prior Accident Year Reserves Years Ended December 31 Total Accident Year 2013 $ 35 $ 20 $ 26 $ (25) $ (11) $ (21) $ (9) $ (4) $ (11) $ — 2014 13 (1) (27) (2) (4) (7) 9 (18) (37) 2015 9 (25) 2 (14) (12) (10) (19) (69) 2016 (21) (9) (14) (16) (11) (24) (95) 2017 (8) (11) (21) 2 (3) (41) 2018 (10) (12) (13) — (35) 2019 (3) (12) (1) (16) 2020 (11) (20) (31) 2021 (14) (14) Total net development for the accident years presented above (80) (50) (110) Adjustment for development on a discounted basis 2 2 (3) Total net development for accident years prior to 2013 (18) (34) (49) Total unallocated claim adjustment expense development — — 10 Total $ (96) $ (82) $ (152) (a) Data presented for these calendar years is required supplemental information, which is unaudited. (b) Other includes the effect of discounting lifetime claim reserves. The table below presents information about average historical claims duration as of December 31, 2022 and is presented as required supplementary information, which is unaudited. Average Annual Percentage Payout of Ultimate Net Incurred Claim and Allocated Claim Adjustment Expenses in Year: 1 2 3 4 5 6 7 8 9 10 Medical professional liability 3.6 % 17.0 % 23.0 % 18.0 % 11.9 % 8.2 % 4.7 % 2.3 % 1.0 % 0.9 % Other professional liability and management liability 6.6 21.0 20.7 16.2 10.3 6.0 4.3 4 |
